The park service also banned all wood or charcoal fires within the national seashore boundaries, but allowed self-contained gas stoves at designated campgrounds and picnic area.

At the Marin Headlands and Muir Woods, the NPS prohibited all fires, including campfires at Kirby Cove, beach fires at Muir Beach, and cooking fires and charcoal grills, except for self-contained gas stoves at designated areas.

Smoking was forbidden on all park trails and in all areas of Muir Woods.

On the Peninsula, the Woodside Fire Protection District warned residents of “extreme fire weather” and urged, “Use caution during outdoor activities.”

Fire Chief Dan Ghioso said the danger resulted from the heat, dryness and abundant vegetation in the wooded community.

“We have 6,000 houses, a lot of trees, a lot of land, a lot of grass and no fog off the coast” he explained Monday.

Ghioso said that while fire officials want residents to keep their lawns mowed, people are urged to mow lawns before 10 a.m. when there is still some humidity.

A lawnmower blade that hits a heated rock on a hot day can create a spark that sets off a fire, he said.

National Weather Service forecaster Bob Benjamin said the main weather factors that create fire danger are winds, which have been fairly high in the past several days, and lack of humidity, rather than high temperatures.

“It is not the heat in and of itself, but the dry air mass that comes with the heat, combined with high winds,” he said.

Benjamin, at the service’s San Francisco Bay Area/Monterey office in Monterey, said that because of the winds, the service posted red flag warnings over the past several days for North Bay and East Bay hills higher than 1,000 feet. The warnings were lifted at 8 a.m. Monday.

Benjamin said the red flag warnings are aimed at local fire agencies. They are intended to help the agencies decide whether to issue public alerts and whether to have extra firefighters available, he said.

(Copyright 2012 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)